Earlier, at about 6:24 p.m., officials said radar indicated that a severe thunderstorm capable of producing a tornado was located near Calumet City and moving east at 20 mph, according the National Weather Service.

A meteorologist said an unconfirmed report indicated that a tornado was spotted on the ground near Calumet City. A Calumet City police dispather said the report of a tornado on the ground was unfounded, but there were reports of funnel clouds.

The funnel clouds were spotted in the air above the Cook County-Lake County, Ind., border near the area of Calumet City and Hammond, according to the weather service and Calumet City police.